Apparatus and method for assembling optical module

Abstract

An apparatus and a method for assembling optical module. The apparatus includes: a plurality of fixtures, an alignment mechanism, a power supply, a spectroscopic prism with a light incident surface close to the plurality of optical modules to be aligned, a first image collecting unit close to a first light emitting surface of the spectroscopic prism and a second image collecting unit with a second light emitting surface of the spectroscopic prism; the controller is configured to determine a light spot that does not meet a quality requirement according to the positions and/or sizes of the plurality of imaging light spots, and generate a corresponding aligning instruction, and determine a to-be-assembled lens corresponding to the light spot that does not meet requirements according to a correspondence between a to-be-assembled lens and the light spot, and output the aligning instruction to an alignment mechanism to adjust a position of the lens.

The invention claimed is: 
     
       1. An apparatus for assembling optical module, comprising:
 a plurality of fixtures configured to a plurality of to-be-assembled optical parts respectively, an alignment mechanism configured to place a plurality of to-be-assembled lenses to designated positions of the plurality of to-be-assembled optical parts respectively to obtain a plurality of optical modules to be aligned; and a power supply configured to supply power to the plurality of optical modules to be aligned; 
 a spectroscopic prism with a light incident surface close to the plurality of optical modules to be aligned, a first image collecting means close to a first light emitting surface of the spectroscopic prism and being coaxial with the first light emitting surface, and a second image collecting means with a second light emitting surface of the spectroscopic prism and being coaxial with the second light emitting surface; the first image collecting means and the second image collecting means are respectively configured to collect positions and sizes of a plurality of imaging light spots corresponding to the plurality of optical modules to be aligned, and feed the positions and sizes to a controller; 
 the controller is configured to determine a light spot that does not meet a quality requirement according to the positions and/or sizes of the plurality of imaging light spots, and generate a corresponding aligning instruction, and determine a to-be-assembled lens corresponding to the light spot that does not meet quality requirements as a to-be-assembled lens necessary to be adjusted according to a correspondence between a to-be-assembled lens and the light spot, and output the aligning instruction to an alignment mechanism holding the lens necessary to be adjusted to adjust a position of the lens necessary to be adjusted. 
 
     
     
       2. The apparatus according to  claim 1 , further comprising:
 a positive lens provided between the first image collecting means and the spectroscopic prism and being coaxial with the first image collecting means. 
 
     
     
       3. The apparatus according to  claim 2 , wherein the positive lens comprises an aspherical positive lens. 
     
     
       4. The apparatus according to  claim 1 , wherein the spectroscopic prism comprises two right-angle prisms with oblique surfaces bonded, and bonded surfaces are coated with a transflective dielectric film having a transmittance and a reflectance in a ratio of 1:1. 
     
     
       5. The apparatus according to  claim 1 , wherein the alignment mechanism further comprises:
 a first robot arm electrically connected to the controller, and an integration mechanism mounted on the first robot arm, and a plurality of aligning heads are integrated on the integration mechanism. 
 
     
     
       6. The apparatus according to  claim 5 , wherein a UV lamp is provided on the alignment mechanism and electrically connected to the controller. 
     
     
       7. The apparatus according to  claim 1 , further comprising:
 a dispensing mechanism; 
 the dispensing mechanism comprises a second robot arm electrically connected to the controller and a UV dispensing syringe fixed on the second robot arm; 
 the dispensing mechanism is configured to perform dispensing on the plurality of to-be-assembled optical parts according to a dispensing instruction of the controller. 
 
     
     
       8. The apparatus according to  claim 7 , wherein the dispensing mechanism further comprises: a third image collecting means fixed on the second robot arm. 
     
     
       9. The apparatus according to  claim 1 , wherein a sensor is provided on each of the plurality of fixtures and configured to detect whether a to-be-assembled optical part is placed on the fixture. 
     
     
       10. A method for assembling optical module applicable to the apparatus according to  claim 1 , comprising:
 controlling the alignment mechanism to place the plurality of to-be-assembled lenses to designated positions of the plurality of to-be-assembled optical parts respectively to obtain the plurality of optical modules to be aligned; 
 controlling the power supply to supply power to the plurality of optical modules to be aligned, so that the plurality of optical modules to be aligned generate images; 
 collecting, by the first image collecting means and the second image collecting means, positions and sizes of a plurality of imaging light spots corresponding to the plurality of optical modules to be aligned, and feeding the positions and sizes to a controller; 
 determining a light spot that does not meet a quality requirement according to the positions and/or sizes of the plurality of imaging light spots, and generating a corresponding aligning instruction, and determining the to-be-assembled lens corresponding to the light spot that does not meet quality requirements as the to-be-assembled lens necessary to be adjusted according to a correspondence between the to-be-assembled lens and the light spot; 
 outputting the aligning instruction to the alignment mechanism holding the lens necessary to be adjusted to adjust a position of the lens necessary to be adjusted. 
 
     
     
       11. The method according to  claim 10 , wherein, with respect to any to-be-assembled lens of the plurality of to-be-assembled lenses, the correspondence between the to-be-assembled lens and the light spot is established as follows:
 controlling the alignment mechanism holding the to-be-assembled lens to move; 
 determining, by the first image collecting means and/or the second image collecting means, a light spot dynamically changed with the movement of the alignment mechanism; 
 using the light spot dynamically changed as the light spot corresponding to the to-be-assembled lens.